|fixed gear; single stage reduction|
Do California's new laws help? I don't think so. they seem rather vague to me. and they still are limited to 20 mph.
This is also an interesting example of how nonsensical many electric bicycle laws are. Limiting the wattage of ebike motors doesn’t necessarily limit how powerful they can be. Even though a motor is marked as 250 watts (and even if it may actually be a true 250 watt motor), anyone could connect it to a 48V battery and run 20 amps through the motor to achieve 1,000 watts of power. Of course this could eventually damage or destroy the motor, but it is still demonstrates how it is entirely possible from a practical standpoint.
In fact, direct drive motors such as the Nine Continent are often listed as 500 or 1,000 watt motors, but many people have had success running them at over 3,000 watts by drilling out the cover plates to provide additional air cooling to the motor. Other modifications such as increasing the gauge of the wires carrying power to the copper windings can help maximize the useful power output of these strong, underrated motors.
Moped laws of Washington state says that you can't have more than 2 Brake Horsepower:
For any vehicle with three or four wheels: No, in order for a vehicle to be street legal, the vehicle must meet the federal requirements for road use and be certified by the manufacturer to meet those standards. Therefore, the vehicle must be originally manufactured for road use in order to be licensed in Washington State.
/ how to motorize a big heavy vehicle/ Hub Motors / How much power do you really need?